Senior Airman Jesse Farris, 28th Civil Engineer Squadron Water and Fuel System Maintenance journeyman, removes an old drain pipe from the ceiling in Borglum Hall on Ellsworth Air Force Base, S.D., Oct. 9, 2014. Airmen belonging to the WFSM section of the 28th CES are responsible for not only maintaining drain pipes, sewer lines and sprinkler systems but also the hydrogen fuel systems of Ellsworth’s aircraft. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)